VBA might be able to do that, but it won't be easy
first, it needs to go through all the document and scan for images (I need to know the command to identify images and go to through the whole document)
then I need it to insert after every image an incremental text (like Figure 1,2,3,etc) which is not easy too
I am not saying it's difficult, but for someone who doesn't know it's not straightforward